Do you use a key for the doors? Maybe you can take them a tumbler and they could figure it out. You know you should order a tumbler for the ignition from the dealer using your vin and get a new key with your vin, and have a new tumbler put in, then theyd all match. Thats what I would do.
No Benzes in the stable at the moment, but itching for one again.
Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 300E Amg Hammer 88k mi sold
1992 500E 156k mi sold